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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Analyzer.Utilities;
using Analyzer.Utilities.Extensions;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.Editing;
using Microsoft.CodeAnalysis.Text;
namespace Microsoft.CodeAnalysis.Analyzers.MetaAnalyzers.Fixers
{
public abstract class ConfigureGeneratedCodeAnalysisFix : CodeFixProvider
{
public override ImmutableArray<string> FixableDiagnosticIds { get; } = ImmutableArray.Create(ConfigureGeneratedCodeAnalysisAnalyzer.Rule.Id);
public override FixAllProvider GetFixAllProvider()
=> WellKnownFixAllProviders.BatchFixer;
public override Task RegisterCodeFixesAsync(CodeFixContext context)
{
foreach (var diagnostic in context.Diagnostics)
{
context.RegisterCodeFix(
CodeAction.Create(
CodeAnalysisDiagnosticsResources.ConfigureGeneratedCodeAnalysisFix,
cancellationToken => ConfigureGeneratedCodeAnalysisAsync(context.Document, diagnostic.Location.SourceSpan, cancellationToken),
equivalenceKey: nameof(ConfigureGeneratedCodeAnalysisFix)),
diagnostic);
}
return Task.CompletedTask;
}
private async Task<Document> ConfigureGeneratedCodeAnalysisAsync(Document document, TextSpan sourceSpan, CancellationToken cancellationToken)
{
var semanticModel = await document.GetRequiredSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var generatedCodeAnalysisFlags = semanticModel.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.MicrosoftCodeAnalysisDiagnosticsGeneratedCodeAnalysisFlags);
if (generatedCodeAnalysisFlags is null)
{
return document;
}
var root = await document.GetRequiredSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
var analysisContextParameter = root.FindNode(sourceSpan, getInnermostNodeForTie: true);
var generator = SyntaxGenerator.GetGenerator(document);
var parameterDeclaration = generator.TryGetContainingDeclaration(analysisContextParameter, DeclarationKind.Parameter);
if (parameterDeclaration is null)
{
return document;
}
var methodDeclaration = generator.TryGetContainingDeclaration(parameterDeclaration.Parent, DeclarationKind.Method);
if (methodDeclaration is null)
{
return document;
}
var statements = GetStatements(methodDeclaration);
var newInvocation = generator.InvocationExpression(
generator.MemberAccessExpression(
generator.IdentifierName(generator.GetName(parameterDeclaration)),
nameof(AnalysisContext.ConfigureGeneratedCodeAnalysis)),
generator.BitwiseOrExpression(
generator.MemberAccessExpression(
generator.TypeExpressionForStaticMemberAccess(generatedCodeAnalysisFlags),
nameof(GeneratedCodeAnalysisFlags.Analyze)),
generator.MemberAccessExpression(
generator.TypeExpressionForStaticMemberAccess(generatedCodeAnalysisFlags),
nameof(GeneratedCodeAnalysisFlags.ReportDiagnostics))));
var newStatements = new SyntaxNode[] { newInvocation }.Concat(statements);
var newMethodDeclaration = generator.WithStatements(methodDeclaration, newStatements);
return document.WithSyntaxRoot(root.ReplaceNode(methodDeclaration, newMethodDeclaration));
}
protected abstract IEnumerable<SyntaxNode> GetStatements(SyntaxNode methodDeclaration);
}
}
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